Awanish Dev, General Manager-HR, died and 100 others were injured in the incident.
Those arrested have been identified as Sohan Lal, a resident of Karnal, Yogesh Kumar, organising secretary of Maruti Suzuki Union and a resident of Jhajjar, Surender Pal of Palwal district, Naveen of Jhajjar, Pradeep of Jind and Satbir of Sirsa districts, police said.
They were nabbed from different locations in the state.
Sohan Lal was arrested yesterday and produced before the judicial magistrate who has sent him to 14 days' judicial custody today. The other five arrested workers would be produced in court tomorrow, they said.
Ninety one, workers who were arrested on 18 July, are lodged in Bhondsi Jail after a court remanded them in judicial custody for 14 days.